Saw



June 29 1926.

5 w. J. SEMELROTH SAW File'd Dec. 19, 1924 2 Sheets-Sheet 1 Patented a... 29, 1926.

UNITED. STATES WILLIAM J. SEHELBOTE, OI wns'rmnn, WI BGONSIN.

Application filed December 18, 1924. Serial I0. 756,986.

This invention relates to tools, and the rimary object of the invention is to provi e a novel combination wood -working tool of the saw type which can be used as a substitute 6 for a number of difierent tools without an attachment whatever and without any a justment save a simple one for a very rare use at an odd angle.

Another object of the invention is the provision of a novel tool of the handsaw type having a straight graduated edge to permit the same to be used as a ruler, and a andle provided with angular faces for engafging the work, whereby the straight edge the blade can'be set at different predetermined angles on the work for marking purposes.

further object of the invention is to provide novel means for pivotally connecting the handle with the saw blade, and novel means for adjustably holding the handle in difi'erent an lar blade, where y di erent angular lines can be drawn on the work when necessary or desirab1e.-

A further object of the invention is to rovide a combination square and saw b ade having the active edge of the blade provided with different sets 'of teeth to permit the blade to be used on'difierent kinds of work, that is rip and cross-cut for use at one sawing as fitting sashes or doors.

A still further object of the invention is to provide a novel combination tool of the abovecharacter, which will be durable and eflicient in use, one that will be simple and easy to manufacture, and one which can be placed upon the market at a small cost.

With these and other objects in view, the invention consists in the novel construction, arrangement, and formation of parts, as will be hereinafter more specifically described, claimed, and illustrated in the accompanying drawings, in which drawings:

liiig. 1 is a side elevation of the improved too a Fig. 2 is a longitudinal section through the tool taken on the line 2-2 of Fig. 1 looking in the direction of the arrows;

Fig. 3 is a fragmentary side elevation of the inner end of the saw blade showing the graduated scale carried thereby;

Fig. 4 is a detail perspective view showing the type of screw employed for holding the handle in an adjusted position relative to the blade;

ositions relative to the 5 is a slde'elevation of a modified type.

of the tool showing another form for adustably connecting the handle of the saw in responding parts throughout the several views, the letter A nerallyindicates one type of the improve tool, and-B and G de-.

note modified forms thereof.

The im roved tool A comprises a handle 10 and-a lade 11. The active edge of the blade 11 is provided with a set of relatlvely large saw teeth 12 and a set of relatively small saw teeth 13. The small saw teeth 13 are arranged adjacent to the inner end of the blade and the different sizes of teeth permit the saw blade to be used on various kinds of work or at one sawlng, as

fitting sashes or doors. The blade 11 opposite to the active edge thereof is provided w1th a straight edge 14 which can be provided with a graduated scale 15 in order to permlt the blade to be used as a ruler. The outer end of the blade 'is provided with a straight edge 16 which is disposed at right angles to the straight edge 14.

The inner end of the saw handle 10 is provided with a slot 17 for the reception of the inner end of the saw blade and a suitable hand grip 18 is formed on the handle in rear of said slot. The handle 10 is constructed in a predetermined manner, and associated with the blade 11 in such a way that the tool can be used as a try-square. The u per edge of the handle is preferably forme. straig t as indicated by the reference character 16 and is normally disposed in longitudinal alinemeilt with the straight edge 14 of the blade. The inner end of the handle is provided with angular faces 17 and 18, and the face 17 is arran d at right anglesto the strai ht edge or ace 16 of the handle, while the ace 18 is dis sed at an angle of substantially 45 to t a face 17.

In order to permit the handle 10 to be ad.- justed relative to the blade 11 the handle is connected with the blade by means of a pivot bolt or the like. Arcuate slots 20 are formed in the blade and these slots are scribed on a circle which has its axis at the pivot bolt being used as a try-square. If so desired a 19 In order to hold the blade and handle in an adjusted position relative to one another, headed screws 21 are provided which extend through the slots 20. The heads of these screws 21 are preferably countersunk within the handle and are adapted to be threaded into nuts 22 countersunk in the opposite face of the handle. It is obvious that by tighte ing up on the screws 21 the handle can e brought into binding con.- tact with the blade. The blade is also prefera-bly provided with scales 23 graduated into degrees of a circle. I

When it is'desired' to use the tool as an ordinary try-square the handle is disposed in its normal position with the face 17 in alinement with the 90 mark on the blade and the face can then be laid upon the edge of the work with the blade on the face of the work which is to be marked. When it is desired to mark the work at a 45 angle it is merely necessary to place the edge 18 in engagement with the face of the work, as is readily apparent to those skilled in the art. However when other markings are to be made other than a 90 or 45 angle the screws 21 can be loosened and the handle the handle is moved to the desired adjusted position, and then looked in place by tightening the screws. It is to be noted at this point that firmly locked to the blade in two different places on opposite sides of the pivot 19. I also prefer to have the handle provided with right-angularly disposed spirit levels 24 and 25.

The saw blade 11 is provided with several small openings 26 along its length by which, sticking an awl or other point in one hole as a pivot and a pencil or scratch point in another hole, a circle may be scribed, or a segment of a circle, as round the corners of tables or shelves. This is how the saw serves as a compass.

In the modified form B of the improved tool the handle 30' is pivotally connected with the blade 31 by means of a pivot bolt 32 in order. to permit swinging movement of the handle relative to the blade. The blade of this formis constructed substan tially the same as the blade 11 and is provided with a straight edge 52.

- of the blade is provided with an arcuate edge 33 around which the handle is adapted to swing, and the handle is held in its adjusted position by the use of a plurality of relatively smallscrews 34 which are adapted to impinge against. one face of the saw blade. As clearly shown in the drawing the handle is provided with a straight inner face 35 whichis disposed normally at right angles tothe straight edge 52 of the blade, and I the. face. 35 \is. adaptedtobe held .in

engagemen with the work when" the ool is The rear end scale 36 can be marked on one face of the blade and graduated in degrees of a circle in order to facilitate the adjusting of the handle 30 relative to the blade. The opposite longitudinal ed es of the handle are which are disposed at right angles to the inner face 35. p

In the form C of my invention shown in Figs. 6 and 7 of the drawin the handle 40 is ri idly connected to the b ads 41, but the ban is and blade are so constructed as to permit the tool to be used as a try-square as will now be described. The upper longitudinal edge of the blade 41 is provided with a straight edge 42 which can of course be graduated similar to the blade 11 and is received in a slot formed in the handle 40. The handle on one side of the blade has its inner edge provided with a straight face .provided with straig t parallel faces 37 i 43 which is disposed at right angles to the straight edge 42 of the blade, and thus it is obvious that when the face 43 is placed in engagement with the-work that a straight edge 42 will be held at an angle of 9( The inner edge of the handle on the opposite face of the saw blade is provided with a straight face 44 disposed at an angle of 45 to the straight edge 42 of the lade, and thus it is obvious that when this face 44 is placed in engagement with the work that the straight edge 42 will be disposed at an angle of 45.

Changes as to details maybe made without departing from the spirit or the scope of this invention, but I VVhat-I claim as new is 1. In a combination tool of the saw type, a blade provided with a straight graduated marking edge, a handle pivotally secured to the inner end of the blade and provided with straight angularly disposed work-engaging faces, the blade being provided with arcuate slots, the slots being scribed on a circle having its axis at the pivot point of the handle, adjustable screws carried by the handle and arranged to extend through said slots, nuts countersunk in the handle and arranged to receive said screws, and arcuate scales arranged on the blade adjacent to said slots and graduated into the degrees of a circle.

2. In a combination tool of the saw type, a blade provided with a straight marking edge, a handle pivotally secured to the innerend of the blade and provided with a plurality of work-engaging faces at each side of the blade and at an angle to each other, said blade being provided with armate slots scribed on a circle having'its am's at the pivot point of the handle, adjustable screws carried by the handle and arran ed to extend through said slots, nuts carried y the a dle nd r g d o receive said screws, and arcuate scales arranged on the blade adjacent "to said slots and graduated into the degrees of a circle. a

3. In a combination tool of the saw type, a blade, a handle pivotally secured to the inner end of the blade and provided with a plurality of work-engaging faces at each side of the blade and at an angle to each other, said blade being provided with an arcuate slot, an adjustable screw carried 19 by the handler and arranged to extend through said slot, and an arcuate scale arranged on the blade adjacent to said slot and. graduated into the degrees of a circle. In testimony whereof I afiix my signature.

-WILLIAM J. SEMELROTH. 

